3 VMA Mode
3.1 Digital Demod Measurement
Modulation Formats: 4-FSK, 8-FSK, 16-FSK
# Name A/P Description Unit, if any
1 Transmit
Power
A A floating point number of transmit power dBm
2 RMS FSK
Error
A A floating point number of the RMS average of the FSK
error at all symbol locations
%
3 Peak FSK
Error
P A floating point number of the largest FSK error at all
symbol locations
%
4 Peak FSK
Error Index
P Location of the symbol that has the largest FSK error
5 RMS FSK Mag
Error
A A floating point number of the carrier magnitude error over
all symbols
%
6 Peak FSK Mag
Error
P A floating point number of the peak carrier magnitude
error in all symbols
%
7 Peak FSK Mag
Error Index
P Location of the symbol that has the largest carrier
magnitude error
8 Carrier Offset A A floating point number in ppm) of the carrier frequency
error relative to the instrument's center frequency
ppm
9 Deviation A A floating point number of the average deviation of all
symbols in the measurement area
Hz
10 Deviation
Accuracy
A A floating point number of the measured deviation
accuracy, compared to its reference
%
11 Clock Error A A floating point number of symbol clock error Hz
Modulation Formats: VSB 8, VSB 16
# Name A/P Description Unit, if any
1 Transmit Power A A floating point number of transmit power dBm
2 RMS EVM A A floating point number of EVM over the entire
measurement area
%
3 Peak EVM P A floating point number of the peak EVM in the
measurement area
%
4 Peak EVM Index P Location of the symbol that has the largest EVM
5 RMS Magnitude
Error
A A floating point number of the average magnitude error
over the entire measurement area
%
6 Peak Magnitude
Error
P A floating point number of the peak magnitude error in
the measurement area
%
7 Peak Magnitude
Error Index
P Location of the symbol that has the largest magnitude
error
8 RMS Phase Error A A floating point number of the average phase error over
the entire measurement area
°
Vector Modulation Analyzer Mode User's &Programmer's Reference 194
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